An Ancient Hohokam petroglyph, that is located at Signal Hill in Saguaro National Park. Dated back to 1200 AD, the area has several petroglyphs, including human, animal, sun, and spirals. This spiral is 18" in diameter and its meaning disappeared long ago with its creators.
This photo has been submitted to the Issue 5 theme “National Parks.” Do you think it’s good for this theme?